Blowing-engine.



No. 684594. Patented Oct. l5, l90l.

J. KENNEDY.

BLOWING ENGINE.

Application filed July 19, 1899.). (No Model.)

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Price.

ATENT JULIAN KENNEDY, OF PITTSBURG, PENNSYLVANIA.

BLOWING ENGINE.

SEEGIIEIGATIQN forming part of Letters Patent No. 684,694, dated October1 5, 1901.

Application filed July 19, 1899. $eria1No. 724,347. (No model.)

To aZZ whom it may concern.-

Be it known that I, JULIAN KENNEDY, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Blowing-Engines, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming part of this specification, in which- Figure 1 is a sideelevation, partly broken away, of a blowing engine constructed inaccordance with my invention; and Fig. 2 is a top plan view of thepiston.

My invention relates to that class of blowing engines whereincylindrical balancevalves are employed for controlling ports in suitablecasings secured to the heads of the cylinder. Heretofore in this type ofblowingengines there was a considerable amount of clearance at the endsof the cylinder, with a consequent loss in economy.

My invention overcomes this difficulty; and it consists in placing acurved perforated cage extending across one head and partially withinthe end of the cylinder, placing a cylindrical valve within the cage,and recessing the piston, so that the valve will enter these recesses atthe end of a stroke,and thus greatly reduce the amount of clearance.

In the drawings, 2 represents a vertical blowing-cylinder having casings3 3 secured to its head and containing curved perforated cages orgratings 4, extending transversely of the head and partially within thecylinder. Each of. these slotted gratings contains an endWise-movablecylindrical valve 5, which valves are actuated by connections from thecrank-shaft of the engine or a counter-shaft thereof. I have shown thevalves as connected up in pairs, each pair being actuated from aconnecting or eccentric rod 6. The

upper end of this rod is connected by an arm 7 to a rock-arm 8, each armof which is connected by adjustable link 9 with lever 10 on a stub-shaftcarrying a lever 11. The levers 11 are pivotally connected to theprojecting ends of the valve-stems, and the valves are thus reciprocatedin the desired manner within their cages. The piston 12 is provided ineach face with curved recesses 13, which are entered by the valve-cagesatthe end of each stroke of the piston.

The operation of the engine is similar to that of other blowing-enginesof this type. The clearance spaces are, however, greatly reduced and acorresponding economy obtained by the peculiar location of the valvesand cages and the recessing of the pistons.

Many changes may be made in the form of the valves, the means foroperating them, and in the form of the piston without departing from myinvention.

I claim- 1. A. blowing-engine having a curved perforated cage or gratingextending across one head and partially within the cylinder,a transverse cylindrical valve movable within the cage, actuating connectionsfor moving the valve across the cylinder Within the cage, and a pistonhaving a recess arranged to receive the cage at the end of the stroke;substantially as described.

2. A blowing-engine having at each end curved perforated cages withinthe cylinderspace, cylindrical balanced valves Within the cages,mechanism for reciprocating the valves end wise across the cylinderwithin the cages, and a piston movable in the cylinder and having in itsopposite faces curved recesses to fit over the cages at the ends of thestroke; substantially as described.

In testimony whereof I have hereunto set my hand.

JULIAN KENNEDY.

Witnesses:

H. M. Conwm, G. B. BLEMMING.

